; BSD LICENSE ; ; Copyright(c) 2015-2016 Intel Corporation. All rights reserved. ; All rights reserved. ; ; Redistribution and use in source and binary forms, with or without ; modification, are permitted provided that the following conditions ; are met: ; ; * Redistributions of source code must retain the above copyright ; notice, this list of conditions and the following disclaimer. ; * Redistributions in binary form must reproduce the above copyright ; notice, this list of conditions and the following disclaimer in ; the documentation and/or other materials provided with the ; distribution. ; * Neither the name of Intel Corporation nor the names of its ; contributors may be used to endorse or promote products derived ; from this software without specific prior written permission. ; ; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ; An edge router typically sits between two networks such as the provider ; core network and the provider access network. A typical packet processing ; pipeline for the downstream traffic (i.e. traffic from core to access ; network) contains the following functional blocks: Packet RX & Routing, ; Traffic management and Packet TX. The input packets are assumed to be ; IPv4, while the output packets are Q-in-Q IPv4. ; ; A simple implementation for this functional pipeline is presented below. ; ; Packet Rx & Traffic Management Packet Tx ; Routing (Pass-Through) (Pass-Through) ; _____________________ SWQ0 ______________________ SWQ4 _____________________ ; RXQ0.0 --->| |----->| |----->| |---> TXQ0.0 ; | | SWQ1 | | SWQ5 | | ; RXQ1.0 --->| |----->| |----->| |---> TXQ1.0 ; | (P1) | SWQ2 | (P2) | SWQ6 | (P3) | ; RXQ2.0 --->| |----->| |----->| |---> TXQ2.0 ; | | SWQ3 | | SWQ7 | | ; RXQ3.0 --->| |----->| |----->| |---> TXQ3.0 ; |_____________________| |______________________| |_____________________| ; | | ^ | ^ | ^ | ^ ; | |__| |__| |__| |__| ; +--> SINK0 TM0 TM1 TM2 TM3 ; (Default) ; ; Input packet: Ethernet/IPv4 ; Output packet: Ethernet/QinQ/IPv4 ; ; Packet buffer layout: ; # Field Name Offset (Bytes) Size (Bytes) ; 0 Mbuf 0 128 ; 1 Headroom 128 128 ; 2 Ethernet header 256 14 ; 3 IPv4 header 270 20 [EAL] log_level = 0 [PIPELINE0] type = MASTER core = 0 [PIPELINE1] type = ROUTING core = 1 pktq_in = RXQ0.0 RXQ1.0 RXQ2.0 RXQ3.0 pktq_out = SWQ0 SWQ1 SWQ2 SWQ3 SINK0 encap = ethernet_qinq qinq_sched = test ip_hdr_offset = 270 [PIPELINE2] type = PASS-THROUGH core = 2 pktq_in = SWQ0 SWQ1 SWQ2 SWQ3 TM0 TM1 TM2 TM3 pktq_out = TM0 TM1 TM2 TM3 SWQ4 SWQ5 SWQ6 SWQ7 [PIPELINE3] type = PASS-THROUGH core = 3 pktq_in = SWQ4 SWQ5 SWQ6 SWQ7 pktq_out = TXQ0.0 TXQ1.0 TXQ2.0 TXQ3.0 [MEMPOOL0] pool_size = 2M